Best Sealant For Freeze Plugs in 2023: Top 10 Picks

Sometimes it might be quite difficult to find the best sealant for freeze plugs. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this sealant for freeze plugs buying guide.

Our Favorites:

Best Sealant For Freeze Plugs Reviews:

SaleBestseller No. 1
Vibra-TITE 550 Blue Core Plug Sealant, 50ml Bottle
  • Increases the shear strength on non-threaded cylindrical metal assemblies
  • Fills voids between close-fitting metal assemblies
  • Creates a solid one-piece assembly
  • Seals joints against leakage
  • Prevents corrosion
Bestseller No. 2
Green Demon Head Gasket and Block Repair | Ceramic Reinforced Head Gasket Sealer | Advanced Coolant Leak DIY Permanent Repair | Engine/Cylinder Sealant | For Cars, SUVs, Trucks | 16oz
  • HEAD GASKET SEALER: Fix it with Green Demon! Safe for all engines from bikes to trucks. Just shake and pour the gasket liquid sealant into the radiator cap to permanently seal and repair the leak. Green Demon magic takes effect in just a few minutes!
  • JUST ONE APPLICATION REPAIR: No engine flushing or draining required. A super strength ceramic formula flows through the cooling system to reach damaged areas. Particles combine creating a mesh that cures and repairs leaks to form a permanent sealed bond.
  • FIX PERMANENTLY: Find coolant puddles? Get Green Demon in your vehicle to avoid costly repairs. Green Demon fixes head gasket failures from coolant to cylinder/cylinder to coolant leaks, blown head gaskets and coolant to oil leaks (in certain situations).
  • DON’T BLOW A GASKET: Fix it! Stop leaks, easily and safely. Use on Head Gaskets, warped or cracked cylinder heads, engine blocks, radiators, heater cores and freeze plugs. Perfect Do-It-Yourself car solution for those expensive and time-consuming repairs.
  • TRUSTED BY PROFESSIONALS: Scientifically engineered, the Green Demon Head Gasket & Block Repair is road tested and mechanic trusted. Save on repairs and extend the life of your car. Buy with confidence - with our 100% money-back or replacement guarantee.
Bestseller No. 3
Dsnaduo 6 Sizes (14pcs) Rubber Expansion Plug, Automotive Rubber Freeze Plug Fit Hole Size: 3/4"~1-1/2" (19mm~38mm)
  • It includes 14 pcs Plugs
  • 3 PCS Fit Hole:3/4"~7/8"(19mm~22mm;3 PCS Fit Hole: 7/ 8"~1"(22mm~25mm)
  • 2 PCS Fit Hole:1"~1-1/8"(25mm~28mm);2 PCS Fit Hole:1-1/8"~1-1/4"(28mm~31mm)
  • 2 PCS Fit Hole:1-1/4"~1-3/8"(31mm~34mm);2 PCS Fit Hole:1-3/8"~1-1/2"(34mm~38mm)
  • Replacement Rubber Expansion Plug/Rubber Freeze Plug/ Exhaust Pressure Test Plug
SaleBestseller No. 4
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
  • Permanent Coolant Leak Repair - Just Shake, Pour And Go.Fit Type: Universal
  • Mixes With All Antifreeze
  • No Draining Or Flushing
  • Fixes Cracks And Leaks In Radiator, Head Gasket, Freeze Plugs, Cylinder Heads, Heater Core, Water Pump Casing And Engine Blocks
Bestseller No. 5
ABN Diesel Freeze Plug Remover Set, 10pk - Frost Plug Installation Tools Installer Pack Freeze Plug Tool Kit for Engines
  • [Remove Frost Plugs with Ease]: Say goodbye to rusted, faulty frost plugs on your diesel engine with the ABN Frost Plug Installer Tool Kit 10 Piece Set; Freeze plug remover tool set contains all you need to efficiently remove and install freeze plugs
  • [For Your Vehicle]: Use the core plug installer freeze plug tool kit for diesel engines; Use for your trucks, SUVs, farming machines, and construction equipment
  • [Easy to Use]: Fit your new freeze plug onto one of the 6 discs provided; Slide retainer nut through the handle and attach disc to ball end of handle; Pound flat end with mallet or hammer (not included) until your freeze plug is snug in place; Silicone sealant on freeze plug recommended, not included
  • [Easy Storage]: No need to worry about parts getting lost in a workbench drawer; 10-piece set includes plastic blow-molded case measuring 23 x 3 x 6 inches (58 x 7 x 15 cm) for easy transportation and organization
  • [Package Contents]: Freeze plug installation tool kit includes (1) 18-inch (45.7 cm) curved handle; (6) round fitting discs measuring 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm; (1) retainer nut; (1) freeze plug removal screw for removing old freeze plugs
Bestseller No. 6
Freeze Plug 4 Pack - Side & Rear - E.D Billet - Cummins 12v & 24v 1989-2002
  • Machined in house at Engineered Diesel!
  • Bolt in so they will not blow out!
  • Perfect for Racing Applications
  • Set of 3 side freeze plugs & 1 rear freeze plug
  • Includes Bolts & O-Ring
Bestseller No. 7
Pioneer PE-100-B 350 Chevy Freeze Plug Kit - Brass
  • The Package Length of the Product is 19.05 centimeters
  • The Package Width of the Product is 21.336 centimeters
  • The Package Height of the Product is 1.524 centimeters
  • Item Package weight : 0.85 pounds
Bestseller No. 8
Permatex 80008 Form-A-Gasket #1 Sealant, 3 oz.
  • Fast-drying, hard-setting sealant designed for sealing rigid materials and flanges
  • Patches holes and joints where permanent assembly is desired
  • Resists common auto and shop fluids including fuels
  • Temperature Range: -65°F to 400°F (-54°C to 204°C)
  • Suggested Applications: Freeze plugs, threaded connections, and manifold gaskets
Bestseller No. 9
LS Engine Block Oil & Coolant Galley Plug & Cylinder head Dowel Pin Kit Expansion Freeze Barbell Compatible with all GM Chevy LS Series Engines LS1 LS3 LS2 LQ4 LQ9 LS6 4.8L 5.3L 6.0L 6.2L Vortec
  • Comes with 4ea Cylinder Head Dowel Pins, 1ea Oil Galley Barbell, 1ea Threaded Coolant Passage Plug, 3ea Threaded Oil Galley Plugs, and 1ea Press in Freeze Plug. Contains all Required Plugs for Completing an Engine Rebuild.
  • Compatible with ALL Chevrolet GM LS Series Engines 1997-2014 (99-2013 4.8L,5.3L,6.0L,6.2L Vortec Truck Engines) LS1, LS2, LS3, LS6, LS7, LS9, GM 4.8L 5.3L 6.0L 6.2L. Also Fits LSX LM7 LR4 LQ4 LQ9 L33 LH6 L92 L76 L99 L96 L82 L83 L84 L86 L87 Engines.
  • LSX Blocks Require Additional Plugs.
  • We are an AS9100D and ISO 9001:2015 Certified Manufacturer that produces aerospace parts for The Boeing Aircraft Company and The US Military. Parts we produce fly at 30,000 feet where failure is not an option. We put the same quality into every part we produce.
  • When you purchase Z Whip Parts you will always get the highest quality for your vehicle that you rightfully deserve.
Bestseller No. 10
Dsnaduo 3 Sizes (6pcs) Rubber Expansion Plug, Fit Hole Size: 3/4"~1-1/8" (19mm~28mm) Automotive Rubber Freeze Plug
  • It includes 6 pcs Plugs
  • 2 PCS Fit Hole:3/4"~7/8"(19mm~22mm)
  • 2 PCS Fit Hole: 7/ 8"~1"(22mm~25mm)
  • 2 PCS Fit Hole:1"~1-1/8"(25mm~28mm)
  • Replacement Rubber Expansion Plug/Rubber Freeze Plug/ Exhaust Pressure Test Plug

Last update on 2023-05-28 / Affiliate links / Images from Amazon Product Advertising API

How to find the best sealant for freeze plugs?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best sealant for freeze plugs for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good sealant for freeze plugs recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the sealant for freeze plugs need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for sealant for freeze plugs to find what you’re looking for:


In some cases, the brand of sealant for freeze plugs is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.


The features in any given sealant for freeze plugs are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.


Customer reviews about sealant for freeze plugs are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.


Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare sealant for freeze plugs quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.


Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.


The quest to find the best sealant for freeze plugs can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.